GEO DataSets

(Submitter supplied) We investigated the short and long term effects of electrically induced exercise on mRNA expression of human paralyzed muscle. We developed an exercise dose that activated the muscle for 0.6% of the day. The short term effects were assessed 3 hours after a single dose of exercise, while the long term effects were assessed after training 5 days per week for at least one year (adherence 81%). A single dose of electrical stimulation increased the mRNA expression of transcriptional, translational, and enzyme regulators of metabolism important to shift muscle toward an oxidative phenotype (PGC-1a, NR4A3, IFRD1, ABRA, PDK4). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5175

20 Samples

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(Submitter supplied) We used a novel approach to study the acute effect of two frequencies of stimulation (20 Hz and 5 Hz; high and low force, respectively) on gene regulation in people with chronic paralysis. Three hours after the completion of the electrical stimulation protocol (5 Hz or 20 Hz), we sampled the vastus lateralis muscle and examined genes involved with metabolic transcription, glycolysis, oxidative phosphorylation, and mitochondria remodelling. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5175

24 Samples

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(Submitter supplied) Exercise attenuates the development of chronic non-communicable diseases (NCDs). Gene signaling pathway analysis offers an opportunity to discover if electrically induced muscle exercise regulates key pathways among people living with spinal cord injury (SCI). We examined short-term and long-term durations of electrically induced skeletal muscle exercise on complex gene signaling pathways, specific gene regulation, and epigenetic tagging of PGC1a, a major transcription factor in skeletal muscle of men with SCI. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5175

30 Samples

Download data: CEL

(Submitter supplied) We used a novel approach to study the acute effect of three physiologic stressors (active contractions, vibration, and systemic heat stress) in human skeletal muscle. Three hours after the completion of a dose of physiologic stress, we sampled the soleus (contraction and vibration) or vastus lateralis (heat) muscle and developed a unique gene expression signature for each stressor. We discovered repetitive active muscle contractions up regulated metabolic transcription factors NR4A3 (12.45 fold change), PGC-1α (5.46 fold change), and ABRA (5.98 fold change); and repressed MSTN (0.56 fold change). more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL5175

34 Samples

Download data: CEL

(Submitter supplied) The leg of healthy volunteers was locally deconditioned using three weeks of unilateral lower limb suspension (ULLS). The extremely deconditioned legs of subjects with a spinal cord injury (SCI) were trained using eight weeks of functional electrical stimulation (FES) exercise, 2-3 times per week (total 20 sessions). These models for local (in)activity were used to study changes in gene expression level of: A) Long-term deconditioning: before FES versus before ULLS (=SCI versus control); B) Short-term deconditioning: after ULLS versus before ULLS; and C) Exercise training: after FES versus before FES.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6244

14 Samples

Download data: CEL

(Submitter supplied) Purpose: The goal of this study was to determine the gene expression changes that occur over 7 days in parralyzed muscle in response to isometric contraction elicited by electrical stimulation initiated 4 months after spinal cord injury and to compare such changes to those observed in a normal muscle subjected to overload.

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL6247

33 Samples

Download data: CEL

(Submitter supplied) We showed that nandrolone attenuated subacute, but not acute, denervation atrophy and upregulation of MAFbx. The present study explored the molecular determinants for this time-dependent effect using microarray analysis to identify genes that were differentially regulated by administration of nandrolone for 7 days beginning either concomitantly with denervation (7 days) or 29 days later (35 days)

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL1355

12 Samples

Download data: CEL, TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platforms:

GPL9454 GPL570

65 Samples

Download data: CEL

(Submitter supplied) Spinal cord injury (SCI) is one of the most disabling health problems facing adults today. Locomotor training has been shown to induce substantial recovery in muscle size and muscle function in both transected and contusion injury animal models of SCI. The overall objective of this study is to implement genome wide expression profiling of skeletal muscle to define the molecular pathways associated with muscle remodeling after SCI and during locomotor training (TM).

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Platform:

GPL1355

36 Samples

Download data: CEL, CHP

(Submitter supplied) Background: Muscle responses to exercise are complex, and potentially include acute responses to exercise-induced injury as well as longer-term adaptive training responses. Using Alaskan sled dogs as an experimental model, changes in muscle gene expression were analyzed to better understand the temporal changes that occur after severe exercise. Methods: Dogs were randomly assigned to undertake in a 160 km run (n=9), or to remain at rest (n=4). more...

Organism:

Canis lupus familiaris

Type:

Expression profiling by array

Platform:

GPL6800

13 Samples

Download data: TXT

(Submitter supplied) We examined global mRNA expression using cDNA microarrays in skeletal muscle of humans before, and 3h and 48h after a single bout of exhaustive endurance exercise (cycling). Keywords: Time course

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS1679

Platform:

GPL3457

8 Samples

Download data: GPR

(Submitter supplied) 8,432 randomly chosen cDNAs from a 40k Research Genetics human cDNA library were amplified under standard conditions (GeneAmp PCR System 9700) with the help of a volumetric robot (Tecan/Genesis, RSP150 and Tomtec/Quadra 384). Amplified products were transferred to a 384-well plates, purified transferred to 384-well print plates (Genetix), dried and resuspended in print buffer (3xSSC, 1.5M Betaine). more...

Organism:

Homo sapiens

2 DataSets

3 Series

15 Samples

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Expression profiling of vastus lateralis muscles 3 and 48 hours after a 75-minute bout of high-intensity cycling. Results identify transcriptional pathways activated in skeletal muscles recovering from endurance exercise.

Organism:

Homo sapiens

Type:

Expression profiling by array, log ratio, 2 time sets

Platform:

GPL3457

Series:

GSE4247

8 Samples

Download data: GPR

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Methylation profiling by high throughput sequencing

Platform:

GPL24247

64 Samples

Download data: TXT

(Submitter supplied) Spinal cord injury (SCI) results in rapid muscle loss in the acute timeframe post-injury. The principal mechanisms of general muscle atrophy have been well-described but there is limited information available specific to SCI. Exogenous drug/small molecule interventions to slow muscle atrophy in severe-to-complete SCI have been relatively ineffective due to the unique combination in loss of central nervous system function due to the spinal lesion, systemic response to the trauma itself, and resultant paralysis. more...

Organism:

Mus musculus

Type:

Methylation profiling by high throughput sequencing

Platform:

GPL24247

32 Samples

Download data: TXT

(Submitter supplied) Spinal cord injury (SCI) results in rapid muscle loss in the acute timeframe post-injury. The principal mechanisms of general muscle atrophy have been well-described but there is limited information available specific to SCI. Exogenous drug/small molecule interventions to slow muscle atrophy in severe-to-complete SCI have been relatively ineffective due to the unique combination in loss of central nervous system function due to the spinal lesion, systemic response to the trauma itself, and resultant paralysis. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24247

32 Samples

Download data: XLSX

(Submitter supplied) Unconditioned thoroughbred geldings were exercised to maximal heart rate or fatigue on an equine high-speed treadmill. Skeletal muscle biopsies were taken from the middle gluteal muscle before, immediately after and four hours after exercise. 

Organism:

Equus caballus

Type:

Expression profiling by array

Platform:

GPL8582

32 Samples

Download data: GPR

(Submitter supplied) Purpose: Spinal cord injury (SCI) is a devastating neurological disease without effective treatment. To generate a comprehensive view of the mechanisms involved in SCI pathology, we applied RNA-sequencing (RNA-seq) technology to characterize the temporal changes in global gene expression after contusive SCI in mice. Method Part1: A total of 27 female C57BI/6J mice (10-16 weeks of age; 20-25g; The Jackson Laboratory, Bar Harbor, ME) were used with 9 mice in each of following groups: shame control, 2 and 7 days after SCI. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13112

8 Samples

Download data: XLS

(Submitter supplied) Advancements in animal models and cell culture techniques have been invaluable in the elucidation of molecular events and mechanisms regulating muscle atrophy. However, few studies have examined muscle atrophy in humans using modern experimental techniques. The purpose of this study was to examine and validate changes in global gene transcription during immobilization-induced muscle atrophy in humans. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

72 Samples

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(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array

4 related Platforms

1531 Samples

Download data: CEL